My Love from the Stars

Higashiyama Mitsuru is an alien who landed in Japan about 400 years ago and is currently hiding his identity and abilities by living as a university lecturer. Mitsuru is able to return back to his home star in three months time, but suddenly Sasahara Tsubaki, a top actress who is known to be a "troublemaker" moved to the condominium unit next to his and changed his life completely.